Best not go on this site then BlackeyedSusan, where they show the earthquakes that occur all over Iceland. (Should add that usually when an eruption starts, there are 100s of earthquakes not just the one that is showing up near Hekla this morning!)
This might be a 'something or nothing' but the folks here think that it looks rather likely that Hekla will erupt soon ~ in the next 4 weeks is mentioned. (Note their advice "not at any cost get closer to Hekla then 10 km from now on. And then I would stay in the car on the road. If you are closer the chance of you surviving is not good and 5 km the chance of you surviving the initial blast is pretty much nill.")
More info on Hekla is here. There are also webcams here and here for if/when anything happens.